Hydraulic motor.



1.0. KAFADER.

HYDRAULIC MOTOR.

APPLICATION FILED 1AN.13.1917. RENEwED 1AN.23.191B1 11 n NL 4 o0/"wa, m61m M@ N 2M d, W W qm W@ U wm A En 111 m2 Mb, A

J. 0. KAFADEH.

HYDRAULIC IVIOTOR.

APPLlcATloN FILED 1AN.1a. 1917. RENEWED 1AN.23, 1918.

Patented. Feb. 26, 1918.

2 SHEETS-SHEET 2.

A TTR/VEYS IES OLIVER KFAFR, 0F FORT BIDWJELL, 'GALIFORNM.

HYDRAULIG MOTOR..

Application led January 13, 1917, Serial No. 142,175. Renewed January23, 1918.

Tc all 'whom it may concern.'

Be it known that I, JAMES O. IIAFADER, a citizen of the United States,and a resident of Fort Bidwell, in the county of Modoc and State ofCalifornia, have invented a new and Improved Hydraulic Motor, of whichthe following is a full, clear, and exact description.

My invention relates to a hydraulic motor adapted to be operatedunderthe pressure' of a column of water representing the did'erence of'levels of subterranean water strata.

In carrying out my invention use is made of a well casing extending froma lower to an upperstratum in which casing the motor is installed at thelower stratum, the motor comprising a cylinder and piston, and a valvecontrolling the admission and discharge of water to and from thecylinder, the valve rod being automatically controlled by the movementsof a plunger rod operated by the piston.

rl`he nature of the invention and its advantages will more clearlyappear as the description proceeds.

Reference is to be had to the accompanying drawings forming a part ofthis specification in which similar reference characters indicate thecorresponding parts in all the l tending between the respective stratais a well casing 10 which is of a capacity to maintain a constant columnof water at the full height ot' the casing. rlFhe upper end of thecasing preferably has a tank 11, said tank being constructed in a cementreservoir 12 at the upper water stratum, the water being delivered tothe tank through the cement reservoir by any suitable conductor pipe 13.

Specication of Letters Fatent.

In the casing l10 at the lower water stratum is a vertical cylinder 14suitably sustained as by means hereinafter described. A piston 15operates in' the cylinder and a reciprocating valve 16 is provided tocontrol the cylinder ports with the operation of the plston. The stem 17of the valve is connected with a valve rod 18 which extends to thereservoir 12 or to the surface of the ground. rIhe plunger 19 of thepiston has the upper end 2O thereof made tubular and connected with thevsolid lower portion 19 by a suitable yoke or other coupling medium 21,and the-valve .rod 18 extends preferably through said tubular part ofthe plunger as shown.

The upper end of the valve rod 18 is guided in a bearing 22 which may berigid with a plate 23 secured to the well timbers 24 at the reservoir 12above the tank 11.

In order to cause the operation of the plunger to control the valve 16,the lever trip 26 extends through a coupling yoke 25 interposed in therod 18 and extends through a vertical slot 27 in a trip arm 28 suitablysecured as by screws 29 to the tubular part 20 of the plunger. Saidlever trip 26 has a Il'head 30, as best seen in Fig. 5, one end of saidhead being fulcrumed as at 31, to the plate 23 or other support, whilethe opposite end of said head 30 is articulated with a rockable bar 32.llFhe bar 32 is pivoted at one end as at 33 to the plate 23 and itsopposite end has a slot and pin connection with the head 30, there beingshown a slot 34 in said head receiving a pin 35 on the bar 32. Thespring 36 encircles the bar 32 and exerts its pressure against theadjacent end of the "lhead' 30 of the lever trip 26. The arrangement issuch that whenever the pin 35 moves from a dead center with the pivots31, 33, the spring 36 will rock the said lever to shift the valve byengaging the trip lever 26 with said rod as will appear.

'lhe cylinder 14 has upper and lower ports 37, 38 above and below thepiston 15 and the valve 16 has corresponding upper and lower inlet ports39, 40. The cylinder is suihciently smaller than the well casing 10 tomaintain a constant volume ot water to adorol an ample supply to thecylinder ports through the said valve ports. llhe lower head 41 of thecylinder in the illustrated example consists of a screw plug and belowthe lower cylinder port 38 I provide means to conduct the water from thecylinder to the lower water stratum. Said means includesregistering'openings 42,v 43 in the cylinder and head 41 and connectionsestablishing communication between the hollow interior of the head 41and the casing 10 below the cylinder base. The valve has an oblongport46 in constant register with the cylinder port 38 and the opening 42. Atthe upper end the valve has a discharge port45 adapted to register withthe adjacent cyl1\n der port 37.

To sustain the cylinder 14 in the casing 10, the following devices are.employed in the illustrated construction: Bowed springs 47 are securedto a ring 48 on a pipe section 49 which 'is connected by a coupling 50Vto the lower end of the plug 41 and between said coupling 50 and thering 48 a resilient packing ring 51 is clamped. The cylinder carryingthe springs 47 which bear against the wall of the casing 10 is loweredin the casing to the desired position. The springs 47 prevent turning ofthe pipe section 49 so that the cylinder with the plug 41 may be screwedtightly into the coupling to expand the packing ring 51 and thus v givethe cylinder a foundation in the casing.

The numeral 52 indicates spiders through which the tubular plunger 20has guided movement.` A bracket arm 53 or any equiv-I alent means may beprovided on the plunger at theupper end to be connected with anyapparatus to be operated.

In operation the valve positioned as in Fig. 2 when the well casing 10is filled with water, it will enter through the registering admissionports 39, 37, and move the piston 15 downwardly. As the pistonapproaches the limit of its stroke the downward movement of the plungerwill cause the upper end of the arm 28 to trip the lever 26, therebyrocking said lever on its fulcruzn 31 and throwing'the head 30 thereofto the left carrying with it the bar 32. As soon as the pivot pin 35 ismoved across vthe center of the pivots 31, 33, the spring 36 will rockthe lever into engagement with the valve rod 18, thereby shifting thevalve 16 to bring the admission port 40 of the valve in register withthe lower port 38 of the cylinder, thus admitting water 'beneath thepiston to lift the same and at the same time the upper discharge port 45of the valve will be brought into register with the port 37 of thecylinder permitting the outflow of water from above the piston throughthe vertical passage 44 to the discharge port 46 of the valve and to theoutlet openings 42, 43 from which the water passes through the plug 41and pipe section -49 to the casing 10 below the packing ring 51 andthence to the lower water stratum A. Upon the piston approaching thelimit of its upward stroke a reverse throw will be given to the levertrip 26 to lift the valve 16 and restore the same to the position inFig. 2.

Thevk inlet pipe 13 leadin tothe tank 11 is equipped in practice wit anyapproved controlling vmeans. I have shown conventionally a gate valve 54adapted to cut olf the water entirely when desired. The stem 55 of thevalve rises to a proper height to be readily accessible. Also, I haveshown conventionally a iioat-controlled means to regulate the iow ofwater, there being indicated a float 56 hung on the arm 57 of a valve58.

rI wish to state that although the illustrated example constitutes apractical embodiment of my invention, I do not limit -myself strictly tothe mechanical details fined in the appended claims.

Having thus described my invention I claim as new, and desire to secureby Letters Patent: .l

1. In a hydraulic motor, a casing adapted for communication at its topwith a source of water supply to maintain a hydrostatic column therein,a cylinder in the casing at the bottom and formed with u per and lowerports to alternately communlcate with the interior of the casing, apiston in said cylinder subject to the hydrostatic column, a valvecontrolling said ports, means to establish a water discharge from thecasing below. the cylinder, said valve being in constant communicationwith the said means to conduct water thereto after operation of thepiston, and means to actuate the valve to control the admission anddischarge of the water through the cylinder ports.

2. In a hydraulic motor, a casing adapted for. communication with awater supply to maintain a hydrostatic head therein, a cylinder in thecasing near the lower end and formed with ports near the ends thereof,the cylinder being of less diameter than the casing, to maintain aconstant volume of water about the cylinder, a piston in said cylindersubject to the hydrostatic head, a valve operating over the cylinderports, 'and having admission ports to establish communication betweenthe cylinder ports and the casing, said valve further having an eductionpassage and eduction ports at the ends in communication with the passageand means establishing a water discharge from the valve through thecasing below the cylinder.

3. In a hydraulic motor, a vertical casing, a cylinder therein, means atthe base of the cylinder for forming a closure of the casing, means tomaintain a hydrostatic head in the casing, a piston in the cylindersubject to the hydrostatic head, valve means associated with thecylinder to control the admission and eduction of water in the operationof the piston, and means to conduct the water from the valve throughsaid closure to the casing below the cylinder.

4. rlhe combination with a well casing connecting an upper subterraneanwater stratum with a lower one to produce a hydrostatic head, of acylinder in the casing near the lower stratum, said cylinder having-admission and eduction means, a piston in the cylinder subject to thehydrostatic head, and means to control the admission and eduction ofwater to and from the cylinder.

5. rl`he combination with a well casing connecting an upper subterraneanwaterV4 stratum with a lower one to produce a hydrostatic head, acylinder in the casing near the lower stratum, said cylinder havingports at the upper and lower ends, a piston in said cylinder subject tothe hydrostatic head, a vertically reciprocating valve, having upper andlower ports to alternately communicate with the respective cylinderports, saidvalve having a vertical eduction passage connecting the upperand lower valve ports, and means to conduct water below the cylinderfrom the said valve passage.

6. The combination with a casing and means to form a hydrostatic headtherein, of a vertical cylinder in said casing near the lower end, saidcylinder having ports at the upper and lower ends, a piston in saidcylinder subject to the hydrostatic head, a vertically reciprocatingvalve having upper and lower ports to alternately communicate with thesaid cylinder ports, said valve having an eduction passage connectingthe upper and lower valve ports, a plug forming the lower cylinder head,a pipe section in the casing below the said plug, coupling means eX-pansible against the casing by the said coupling to constitute afoundation for the cylinder, said valve passage being in communicationwith the said pipe section.

JAMES @LllVlER KAFADER.

